//
// Created by wze-zero on 2024/7/8 008.
//
#include <iostream>

using namespace std;

int main() {
    int month;
    cin >> month;
    switch (month) {
        case 3:
        case 4:
        case 5:
            cout << "春季" << endl;
            break;
        case 6:
        case 7:
        case 8:
            cout << "夏季" << endl;
            break;
        case 9:
        case 10:
        case 11:
            cout << "秋季" << endl;
            break;
        case 12:
        case 1:
        case 2:
            cout << "冬季" << endl;
            break;
        default:
            cout << "不合法" << endl;

    }
    return 0;
}
